Ophthalmic mounting.



N. M. BAKER.

OPHTHALMIC MOUNTING.

APPLICATION FILED MAY 25. I914.

1 1 In I Patented Apr. 25, 1916.

WITNESSES: l/VI/E/VTOR NELISO/V M B/I/IEf? l I BY (LP/Vb p I If v A TTOR/I/EKS NELSON M. BAKER, 0F SOUTI-IBRIDGE, MASSACHUSETTS, ASSIGNOR TO'AMERICAN OPTICAL COMPANY, OF SOUTI-IBRIDGE, MASSACHUSETTS, A VOLUNTARY ASSO- CIATION OF MASSACHUSETTS.

OPHTHALMIC MOUNTING.

Specification of Letters Patent.

Patented Apr. 125, 1916..

To all whom it may concern:

Be it known that I, NELsoN M. BAKER, a citizen of the United States, residing at Southbridge, in the county of Worcester and State of Massachusetts, have invented certain new and useful Improvements in Ophthalmic Mountings, of which the following is a specification.

My invention relates to improvements in ophthalmic mountings, and has particular reference to that type of mounting in which a wide bridge is employed, such as in shell or imitation shell goods, or in the reading type of gold or gold filled ware.

The leading object of my invention is the provision of an extremely comfortable and satisfactory mounting which can make use of the large round eye at present popular without necessitating decentering of the lenses and yet will permit of attainment of the correct pupillary distance between the centers thereof.

A further object of my inventlon 1s, the

' provision of a mounting of this character in which the mounting for the lenses may act as a positioning member for engaging the nose, and in which the gripplng members will be properly supported to correctly hold the mounting in position on the face. 7

Another object of my invention is the provision of a mounting which shall be neat and attractive in appearance and have a mimimum number of projecting parts liable to catch on the clothing, interfere w1th the symmetry of the mounting, or collect dlrt, also to provide a simple but efiicient and durable mounting constructed from shell or other relatively soft material.

Other objects and advantages of my improvement should be readily apparent by reference to the following description taken in connection with the accompanying drawings, and it will be understood that I may make any modifications 1n the speclfic details of construction shown and ClGSCIlbfBd within the scope of the appended claim without departing from or exceeding the spirit of my invention.

Figure I represents a front elevat1on illustrating one form of my invention. Fig. II represents a top plan view thereof showing the guards in open posltlon.

In the drawings, in which slmilar characters of reference are employed to denote corresponding parts throughout the several views, the numeral 1 designates the rim or frame pieces in which are mounted the lenses 2, while connecting the said rim is the bridge member 3. It is to be noted that I have illustrated this bridge member as particularly noted in connection with this construction that there is an absolutely smooth or flush joint between the frames and the bridge member. Consequently there are no corners, bumps or the like to bear against and irritate the nose of the wearer. Consequently I have provided an extremely comfortable and desirable mounting.

In that form of my invention illustrated in Fig. I, I have shown as formed at each end of the bridge member the recess l, formed by cutting away the portion of the frame 1, while mounted in said recess and extending forwardly and rearwardly therefrom is the guard arm 5 bearing at one end the guard 6 and at the other end being preferably provided with a handle portion 7 for manipulation thereof. Passing vertically through the recess and engaged thereabove and there below in the wall of the recess is a pivot member preferably having a plain portion 8 terminating in a shoulder 9 and having a lower threaded portion 10 engaged in the frame 1. The guard arm or lever 5 is mounted upon the plain portion of said pivot, while mounted on the pivot and contained within the recess is a spring 11 for actuating the lever.

It is to be understood in connection with the form shown in Fig. I, that the pivot may if desired be provided with a head 14 engaging the upper portion of the mounting so that tightening of the pivot into place will serve to slightly decrease the size of the rim 1 and aid in securing the lens in position, the open joint provided in this form entirely eliminated. This produces a double advantage in that it will permit of the attainment of a narrower pupillary distance and consequently the use of larger lenses.

without the necessity for decentering of the same, and also prevents any possibility of irritation of the nose on account of said bumps or the like touching thereagainst when the mounting is in position. At the same time if desired the mounting may be so fitted that the portions 1 will serve as guards the mounting in position on the face of the wearer, while the upper and lower bearing portions of the guard serve almost entirely as gripping members to engage the nose at two points to prevent any tilting or swinging movement of the mounting thereon and anchor the same in position. This supporting of a portion of the weight by the bridge ,and frame thus permits of less spring tension on the arm and consequently the various parts cooperate to produce an extremely comfortable mounting. It is further to be noted that by the use of my invention it is possible to employ an extremely wide bridge, such as is particularly desirable with shell or other reading glasses, and at the same time to have the guards fit in correct position upon the nose while being of regular size. The advantage of this should be readily apparent by reference to Fig. I, for example, in which it will be seen that the guards 6 are'located at about the .or positioning members and aid in setting middle of the mounting, while it will be further noted that with a wide bridge such as here employed, should the guards be placed ontop of the bridge, as is the usual posi- ,tion of mounting the same, the tops of the and thus both satisfactorily retain the 'mountingwhlle combining with the other features ,thereof to provide a most comfortable and satisfactory eyeglass.

I claim A one-piece mounting. comprising a central bridging member having a lens engaging rim integral with each end thereof, said bridge being of heavy but 'esilient material and having a slot or recess formed through the rim and-adjacent portion of the bridge at each end thereof, a pivot post extending downwardly through the bridge and transvers'ely of the recess at each end of the bridge, a guard lever and an actuating spring therefor, mounted on each of the pivots within therecess, whereby tightening of the pivot serves both to secure the lever and spring in position and also to spring together the split ends of the rim to tightly secure a lens in position within the rim, substantially as described.

In testimony whereof I afiix my signature in presence of two witnesses.

NELSON M. BAKER. Vitnesses:

1 H. K. PARsoNs,

JosErH J. DEMERS.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of latenti,

Washington, I). G. 

